On Ecology and the Environment consists of Jose Maria Sison's writings (articles, speeches, statements and interviews) written from 1983 to 2001. These criticize neoliberal trade liberalization, which encourages the growth of energy-intensive industries, the expansion of chemical-intensive corporate farms, increases the extraction and burning of fossil fuels, deforestation, and other major drivers of global warming. It states the obvious fact that it is only by ending monopoly capitalism that the climate crisis can be arrested. In order to preserve the world's intrinsic and practical value for human development, we need to fundamentally reorient production and consumption based on human needs rather than for the boundless accumulation of profit for a few.